I have been working on converting over to the total immersion way of swimming and I am seeing a difference even after 3 weeks of working on it. Here's some things that have helped me:
1 - Think long. I want to make my body as long as possible in the water. The longer it is the better I'm able to slice through the water.
2 - Concentrate, really concentrate on what you're trying to do when doing the drills.
3 - Fins help when doing drills.
4 - Initiate the breathing roll with your hips instead of your shoulders. It feels odd at first but it does make the roll from side to side easier. Roll your whole body and not just your head.
I'm going to order the DVD. I'm certain I'll pick up more after watching the video to see how it's done properly.